Meilleures offres pour Carte de Développement,monoculaire,Pompes

MPMPMP 05/05/2019

I ordered two of these boards and they arrived much faster than I expected and were in good condition. They were individually packed in static bags and came with two header pins as shown on the product page. Soldering them was easy - stick the pins into a breadboard and set the board down so the pins go through the holes. No need for any tools to hold everything in place. Windows 10 recognized the boards and installed the correct drivers automatically; the Arduino application saw them too and I was able to program them immediately. It worked! Note that while this board is compatible with a Leonardo (same MCU), the built-in LED on a Leonardo (on Pin 13) does not exist on this board. I ran into some trouble with one of them that was entirely my own fault. Based on the silkscreen markings on the board and its size, I thought I'd try using the SparkFun Pro Micro drivers. Things worked fine until I programmed the board, after which Windows would no longer recognize it as a usable USB device. Turns out the SparkFun Pro Micro comes in two flavours: 5V/16MHz and 3.3V/8MHz, and the driver defaults to 3.3V/8MHz. The solution to the problem is to change the board type in the Arduino application back to Leonardo (5V), then ground the /RST pin twice, quickly. After that, the bootloader will wait for eight seconds for you to set the Arduino software to the correct COM port and upload your program, making sure you have the board type set to Leonardo. It took me a couple of tries but I brought the board back from the dead. If you ever program your board and it no longer works and your computer can't seem to communicate with it anymore, try the above technique, or do a search for "pro-micro fail troubleshooting" it's where I got the above from. This is a great little board with more pins than you'd expect for a device this small, and it plugs nicely into a breadboard, leaving plenty of room for other components.

Geekcreit® Pro Micro 5V 16M Mini Carte de développement de microcontrôleur Leonardo Geekcreit pour Arduino - produits compatibles avec les cartes Arduino officielles

10,23€ 15,81€

1

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MPMPMP 24/04/2019

For the price, this is a great little monocular. The optics aren't top notch but they work well enough, and the focusing and other controls are butter-smooth and work well. The objective and eyepiece both have coatings to help with light transmission and reflections. The inside has a small baffle, most likely to reduce vignetting. Despite what the product listing says, this is NOT a night-vision scope. There are no batteries, no infrared, no image intensifier, no CCDs. You can certainly use it at night, but it is NOT a night-vision scope. It also smells to high heaven out of the box - a very chemical, rubbery smell. I've been airing it out for a few days and that's helping a lot. It's a good size for one-handed use, and if you use the attached lanyard to hold the eyepiece cap, you won't be able to lose any lens caps or other parts in the dark. It also comes with a serviceable nylon belt pouch and a cleaning cloth.

Télescope monoculaire IPRee® 40x60 optique HD BAK4 pour vision diurne et nocturne à une distance de 1500 m / 9500 m pour le camping et la randonnée en plein air

18,32€ 46,51€

5

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MPMPMP 08/05/2019

SUMMARY: A very inexpensive pump that would be a good fit for small applications like miniature fountains or water features. This pump arrived wrapped in foam and was in good condition. The pump works well at 5V, which gives a lot of options for power. The wires are thinner than I expected, and the outer sheath doesn't go down into the pump body. This doesn't appear to cause any problems, but fit and finish of the pump isn't as good as it could be. It is very inexpensive, though. The pump is not very loud at 5V and pulled an average of 168mA over three trials in cold tap water.

Excellway Mini Micro Pompe de moteur submersible Pompes à eau DC 3-6V 100L/H Faible

5,36€ 13,95€

1

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MPMPMP 08/05/2019

SUMMARY: A little more expensive than it should probably be, but this is a serviceable chassis and motor set for a lightweight, low-power robot or RC vehicle. This arrived in a very sturdy styrofoam box that was in turn inside a shipping bag. The chassis was in very good condition, and a quick test with my bench power supply confirmed that the motors run nicely at 5V and the gearing between the motor and tracks is sound. Underneath the chassis is room for four AA batteries. Unfortunately, I didn't receive any screws with my order to hold the door shut, but it shouldn't be hard to find something in my mixed screws jar! The bogey wheels are given stiffness by springs that should be fine for lightweight robotics projects. This is not the product for you if you're looking to build a robot butler or something to carry firewood around. I don't know how long the tracks will last, but again - this chassis is for a lightweight robotics or RC project, not for something that must work for a long time under demanding conditions.

Kit de bricolage de voiture de châssis de réservoir de robot intelligent absorbant les chocs légers 3V-7V avec moteur 130

19,33€ 20,46€

1

Commentaires (1)

MPMPMP 25/06/2020

I love these LoRa units. I wish they had 2.5mm spacing but they work very well and are easy to use. I have successfully sent data over 2km inside a city with these modules. Remember, though - the slower your data rate, the better the range.

3Pcs Smart Electronics SX1278 LoRa Ra-02 Module sans fil à spectre étendu / Ultra Far 10KM / 433M

20,40€ 21,39€

1

Commentaires (1)

MPMPMP 15/01/2020

A very good price for these little servos. They're not very strong and the gears are plastic but they're perfect for many little projects. They come with three horns: a single-armed one, a straight one, and a straight one with two little arms out at 90 degrees from the main ones. I hooked it up to an Arduino and had it working in less than five minutes.

6PCS SG90 Mini Servomoteur Analogique à Engrenages 9g Pour Avion RC Hélicoptère

14,44€ 20,09€

1

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MPMPMP 26/06/2020

If you have a project where you'd like to use the Pro Mini layout but want a little more kick and can run it at 5V, you can't go wrong with these. Just remember to change the settings in the Arduino IDE to match.

Geekcreit® Pro Mini ATMEGA328P 5V / 16M Module de version amélioré pour Arduino

6,41€ 7,88€

0

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MPMPMP 25/06/2020

These little converters seem to work very well. They don't sag when a small to medium load is placed on them (I haven't tested it with anything over 2.1A yet), and they are not noisy so they are good to drive devices that need clean power like microcontrollers or small SBCs like the Raspberry Pi. Doing some back-of-the-napkin math, I figure they're about 90% efficient under a 250mA load, and about 82% when at a 2A load, which is pretty good. All three of them have approximately the same performance.

3 pièces double sortie USB 6-24 V à 5.2 V 3A convertisseur de module de chargeur d'alimentation abaisseur DC-DC

10,74€ 11,16€

0

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MPMPMP 25/06/2020

This screwdriver set is not too bad but it takes a bit of getting used to how to remove and replace the bits. The metal in some of the bits seems to be a little soft, so be careful when trying to loosen very tight screws. Otherwise, not a bad addition to a toolkit.

Raitool 25 en 1 Ensemble de portefeuille de tournevis de précision multi-usages Repairtools

15,81€ 20,46€

0

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MPMPMP 25/06/2020

This is a good little flash memory unit. I have had no problems using it with an Arduino, a PIC, an ESP32, and a Raspberry Pi. Just keep in mind that flash isn't as fast as DRAM or SRAM (check the datasheet if you need more information), design your project around the timing requirements, and you'll be fine.

W25Q32 W25Q128 Module de stockage FLASH grande capacité Carte mémoire SPI Interface BV FV STM32

6,44€ 7,43€

0

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MPMPMP 16/05/2020

This tablet works really well. Well, after I found the power switch, that is. :-) You can draw fine lines on it that are nicely visible. I don't know how useful it is as a mousepad, though, because I find I'm using it to scribble notes and stuff on it all the time. A good value!

Tablette d'écriture multifonction de 12 pouces avec écran LCD mis à jour, 3 en 1: tapis de souris, règle, planche à dessin et écriture manuscrite

17,39€ 26,97€

0

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MPMPMP 16/05/2020

If you're looking for a pair of electric socks that will turn your feet all hot and red, this isn't the product for you... but if you want a comfortable, warm heat, these are quite good. They come with two Li-ion battery packs (one for each sock), and a small USB charging cable to charge them. They take a while to charge, but that's not necessarily a bad thing - it's easier on the batteries and safer.

Chaussettes chauffantes électriques rechargeables USB à 40-55℃ pour le camping et les voyages d'hiver

8,31€ 37,21€

0

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MPMPMP 16/05/2020

All five of these worked out of the package and all show the same voltage to within .02. They're small, they work, and they're inexpensive. Can't complain!

5 pièces Geekcreit® rouge LED 0,28 pouces 2.5 V-30 V Mini voltmètre numérique testeur de tension voltmètre

10,69€ 17,30€

0

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Stimulateur d'entraînement électrique pour la forme corporelle EMS de l'entraîneur de forme du corps KALOAD pour les muscles abdominaux et des bras

13,02€ 37,21€

Q: a cola dura quanto tempo,eu tenho que ficar trocando o refil da cola?

demandé par Andrevirginio sur 2018-01-25 12:45:36

MPMPMP Euusei uma das almofadas 4 vezes at agora e ainda est aderindo.

2020-05-16 08:53:11 Utile

Soumettre

réponses (1)

MPMPMP 16/05/2020

These buttons are a good size, feel sturdy, and have a good click action to them. They're a little larger than I expected but they work great, and the price is very good.

10Pcs DIP PCB Mini Verrouillage Tactile Tact Push Button Switch 12x12x9mm

2,78€ 4,64€

0

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MPMPMP 11/05/2020

Reasonably gentle when used with a mild cleanser, and it's been holding up far better than I expected. Pretty good for the price.

2Pcs Mini Dissolvant à points noirs exfoliant

8,36€ 18,60€

0

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MPMPMP 11/05/2020

A simple yet effective magnifying glass. I don't know how long the case will hold up, but for the price, it's a good little magnifier!

5X poche de pliage loupe grossissant pochette de verre

8,59€ 9,30€

0

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MPMPMP 11/05/2020

First off, these products will NOT get you looking ripped like the picture. Seriously - there's no substitute for actual exercise when it comes to this stuff. I bought it to try and relax the muscles in my trick knee. Definitely makes the muscle twitch but is too uncomfortable to use for long enough.

Stimulateur d'entraînement électrique pour la forme corporelle EMS de l'entraîneur de forme du corps KALOAD pour les muscles abdominaux et des bras

13,02€ 37,21€

0

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MPMPMP 11/05/2020

Big, blocky, kind of cumbersome, but does the job. I use it to power a 3D pen with an EU-style plug from a US-style outlet. Works well.

Universal Travel Power Socket à AU UK US EU Convertisseur Chargeur pour téléphone MObile

9,30€ 11,16€

0

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MPMPMP 23/04/2020

Product arrived quickly and undamaged. Strips are 0.1mm thick. Looks good.

100 Pièces de Bandes de Batterie en Nickel Pur à Basse Résistance 99,96% pour Soudage 0,1x4x100mm

10,74€ 11,16€

0

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