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Custom power bank

Custom power bank

par gfaman

Light and small power bank which can use all kind of standard old mobi...

1.6k 3

E-ink voltmeter multichannel for PIC uC:

E-ink voltmeter multichannel for PIC uC:

par gfaman

For another project under development, I have to check several voltage...

3.1k 0

Memory game for beginner:

Memory game for beginner:

par gfaman

Simple project to memorize color sequence. The purpose of this project...

2.4k 0

2nd version of Power bank for Laptop with batteries 18650: V3:

2nd version of Power bank for Laptop with batteries 18650: V3:

par gfaman

In the first version of this project, I was using some modules associa...

14.8k 11

Laptop power bank with 2 x 18650 Lithium batteries

Laptop power bank with 2 x 18650 Lithium batteries

par gfaman

When a laptop has no more valid internal battery, it is frustrated to...

6.0k 0

Simple charger and capacity measurement equipment:

Simple charger and capacity measurement equipment:

par gfaman

With 2 modules quite cheap on the market, fast and enough charger / di...

5.7k 2

Raspberry Pi V4 no noise power supply for audio streamer:

Raspberry Pi V4 no noise power supply for audio streamer:

par gfaman

What can be the best power supply ? One with isolated from the main 22...

16.6k 7

Display charge and discharge current wide range with INA219:

Display charge and discharge current wide range with INA219:

par gfaman

To display for a device which have discharging and charging capability...

18.2k 2

Electronic Target for Toy Foam Blaster like Nerf

Electronic Target for Toy Foam Blaster like Nerf

par gfaman

Multiplayer target with score management and OLED display.

13.6k 2

Solar power Christmas garland:

Solar power Christmas garland:

par gfaman

How to change a simple led garland into a solar power blinking one , w...

6.7k 0

Discrete Light detector alarm by email:

Discrete Light detector alarm by email:

par gfaman

This is not an USB charger ! This is a light detector, sending any amb...

15.0k 4

Camel bag water level display 2nd version:

Camel bag water level display 2nd version:

par gfaman

New version of the camel bag water level indicator based on uC instead...

5.4k 0

Wireless Trace for Debug

Wireless Trace for Debug

par gfaman

Display on a webpage a serial debug trace send by Wifi. Use an ESP32 w...

7.9k 1

Simple push button ON/OFF with battery level check:

Simple push button ON/OFF with battery level check:

par gfaman

Simple IC to manage a push button as ON/OFF switch with battery level...

17.2k 10

Ventilator with pressure control

Ventilator with pressure control

par gfaman

Air pump (like CPAP) with pressure control, working with any brushless...

5.6k 0

Nixie Alarm Clock with motion sensor

Nixie Alarm Clock with motion sensor

par gfaman

Nixie night clock with alarm with motion sensor to show the time durin...

10.6k 8

Portable display PM2.5

Portable display PM2.5

par gfaman

Mini device which display PM2.5 with temperateure and humidity. Work...

15.7k 20

Portable Spot Welding Device with Supercapacitor

Portable Spot Welding Device with Supercapacitor

par gfaman

For battery assembly, a spot welding tool is nice to have. I develop t...

26.5k 7

Youtube subscribers counter and clock on Nixie Display:

Youtube subscribers counter and clock on Nixie Display:

par gfaman

Display of your number of subscribers from your Youtube channel on an...

4.5k 0

Replacement Alkaline battery with old phone Lithium battery:

Replacement Alkaline battery with old phone Lithium battery:

par gfaman

Christmas was nice for the kids. Unfortunately, these toys need endles...

4.0k 0

Portable dust pollution display with temp and Humidity:

Portable dust pollution display with temp and Humidity:

par gfaman

Display air dust situation as well as temperature and humidity:

4.6k 1

Back ultrasound radar for bike:

Back ultrasound radar for bike:

par gfaman

Alert a city biker when some cars are approaching too close on the lef...

23.9k 8

Simple Wifi multimeter:

Simple Wifi multimeter:

par gfaman

Measurement of slow voltage variation and upload to the cloud

6.3k 0

Wifi Repeater solar power

Wifi Repeater solar power

par gfaman

Always on, solar powered, stand-alone 24/7 Wi-Fi repeater.

25.5k 4

Nixie Watch:

Nixie Watch:

par gfaman

Nixie watch in wood casing...

29.1k 3

Solar charger for smartphone:

Solar charger for smartphone:

par gfaman

How a small solar panel can recharge a smartphone through the USB plug...

13.7k 4

Nixie compact, thermometer, clock GPS, letter box alarm:

Nixie compact, thermometer, clock GPS, letter box alarm:

par gfaman

This is the story of a Christmas gift for my father...He always like o...

7.8k 2

Sniffer for RFM12: Display exchanges over the air on PC:

Sniffer for RFM12: Display exchanges over the air on PC:

par gfaman

I'm currently developing a device (which I will propose later here...

6.6k 0

Simple lithium battery charger by solar:

Simple lithium battery charger by solar:

par gfaman

For another project (pollution detector), I tried to build WITHOUT ded...

5.2k 0

Air pollution display, Solar power, Wifi data upload:

Air pollution display, Solar power, Wifi data upload:

par gfaman

For many of us, air pollution is a daily problem.People are talking ab...

10.2k 3

Test bench for battery inside an equipment:

Test bench for battery inside an equipment:

par gfaman

I build this bench 2 years ago. I wanted to know if my device (a mobil...

4.5k 1

Reset detector for mobile phone: Simple idea:

Reset detector for mobile phone: Simple idea:

par gfaman

One day, I have to know if there is reset with my smartphone, how many...

4.4k 0

Camel bag water indicator [ 140375 ]

Camel bag water indicator [ 140375 ]

par gfaman

By doing many mountain bike by hot weather (where I live), to carry a...

10.5k 3

Outdoor Solar/Wind Wireless Wifi/3G Webcam & Wifi hotspot in option:

Outdoor Solar/Wind Wireless Wifi/3G Webcam & Wifi hotspot in option:

par gfaman

Many of us want to receive regularly a picture of a place, which can b...

29.3k 5