Julian’s postbag: #48 – mppt solar buck regulator led display
An interesting little buck converter with dual LED display which claims to have an MPPT function. Unfortunately the frustrating British…
What’s in my bag? – pilot
Essential items for your everyday handbag carry. Pilot episode of new video format.
Julian’s postbag: #47 – nrf51822 bluetooth 4.0 ble dev kit
A Bluetooth Low Energy development kit. BLE400 Mother Board for nRF51822 BLE4.0 Bluetooth 2.4G Wireless Module Expansion http://www.ebay.com/itm/-/400967553827 Low Power…
Julian’s idea: balance charging using inductive transfer
Proposal for a balance charging scheme using inductive transfer from one cell to the adjacent one.
Julian’s postbag: #46 – sunfounder quadruped robot kit
Unboxing and some assembly of Sunfounder's walking robot kit. A couple of Arduino Nanos in here, plus nRF24L01+ modules, 12…
Julian’s postbag: #45 – pal tv camera 170 lens fpv 5v! banggood
A 5V (NOT 12V) wide angle lens camera for FPV (first person view) for use on quadcopters and other flying…
Julian’s project: electric bike upgrade to lifepo4 – #6 storage charge
The Turnigy balance charger misbehaved and let one of the LiFePO4 cells go way over voltage. So I'm trying a…
Arduino mppt solar charge controller: #22 – inductor change
Finally got round to changing the inductor. The new one has a much larger ferrite ring and thicker enamelled copper…