lexel, I finally got around to installing your GT driver in the XHP35 MT09R and WOW! It was only “decent” before but now serious. Stock led, smooth ramp 80% NarsilM v1.2. Got a little chirp on contact charge but good now. I took your suggestion and did not bypass the springs. Great driver! Keep up the super work!!
replacing the at 2S unreliable AMC7135s
DD + small FET and resistors instead
MT03/09R XHP70.2
support of permanent switch LED plus MCU indicator with resistors
30mm for Convoy L6/ Thorfire S70S
support of permanent switch LED plus MCU indicator with resistors
20-22mm with 2 FETs and also 6+1 AMC
here with 1S configuration with 6+1 AMC
I had to drill out one via on the spring side partially that secures the switch pad from lifting if soldered too hot
17mm 2S with 2 FETs
17mm LX v1.0 FET+5+1
more filtering caps for very high drain builds
Not sure where the best place to ask this is, so I’ll give it a try here. I had some boards made using: your ‘new’ 17mm TA layout. I built one in a 1s configuration with an ATTiny25v with no LDO, Zener or bleed resistor using recommended components and resistor values.
I flashed it with the bistro-TAv1-OTSM-HD-attiny25.hex file provided in the Bistro-HD v1.7.1 distribution.
It works great, except for one thing. The voltage readout is wrong. It usually reads out 4.2. I may have seen it go as low as 4.1.
My understanding is that the firmware I am using reads the voltage from Vcc. So I am really at a loss as to what could be wrong. My understanding is that 1.7.1 is pretty well tested for OSTM configs, but should I be using v1.4.1instead?
I got no idea what could cause this, I had never voltage readout making problems, sometimes the diode bridge was closed by solder paste and I got 4.4V readout
Thanks. I’ll have to refer to the schematics to better understand the extra caps.
I wonder if I bypassed the diode by mistake somehow. I cant remember how low I took the actual cell voltage. I know I haven’t tested it with low SoC cell, but I thought I’d check with a cell @ ~3.7.
I got atm not enough time to get ahead with the Boost, I made some progress just to run into a problem again
I ordered version 3 of prototyp boards 10 days ago, with enhanced thermal path to cool the MPS chip as I ran likely on 50W output into thermal problems I hope the new board will fix it