|Software for the Deluxe Touchscreen eFuse|
BASIC and C source code plus HEX file for the Deluxe Touchscreen eFuse project.
The download package includes two .BAS files; the library file must be loaded and saved to the library section first. Alternatively, load the HEX file directly on the PIC32; it also includes MMBasic.
The package also includes the source of the two CFUNCTIONs used.
|2.8-inch TFT Touchscreen LCD module with SD card socket|
A touch screen display module as used in the Micromite LCD BackPack. Uses a 14-pin header for interfacing to the display (ILI9341 controller) and touch sensor, plus a 4 pin (unpopulated) header for the onboard SD card holder.
|IPP80P03P4L04 high-current P-channel Mosfet|
A high-current P-channel Mosfet with very low on-resistance in a standard TO-220 package. Its critical specifications are:
Maximum drain-source voltage: 30V
Maximum gate-source voltage: +5V, -16V
Maximum continuous drain current: 80A
Maximum pulsed drain current: 320A
Maximum dissipation: 137W
Gate threshold voltage: 1-2V
Input capacitance: 8.7nF
Output capacitance: 2.4nF
Reverse transfer capacitance: 65pF
|LT1490ACN8 dual "Over-the-Top" rail-to-rail op amp|
An LT1940A dual op amp in 8-pin DIP package, as featured in the July 2017 article titled: “Over-The-Top” rail-to-rail op amps. Typical specifications are as follows:
Supply voltage range: 2.4-44V
Input common mode range: 0-44V (independent of supply voltage)
Quiescent current: ~40µA/amplifier (~80µA total)
Gain bandwidth product: 200kHz
Slew rate: 60mV/µs
Input offset voltage: 150µV
Input bias current: 1nA
Input noise voltage: 50nV/√Hz
Output swing, no load: 3mV to Vs-12mV
Ouptut swing, 5mA load: 250mV to Vs-600mV
CMRR @ 1kHz: 92dB
|BUK7909-75AIE 75V 120A N-channel SenseFET|
This is an NXP (now Nexperia) Mosfet in a 5-pin TO-220 package, which incorporates current sensing. Its critical specifications are:
Maximum drain-source voltage: 75V
Maximum gate-source voltage: ±20V
Maximum continuous drain current: 120A
Peak drain current: 480A
Maximum dissipation: 272W
Ratio of drain current to sense current: 500:1 (nominal)
Gate-source threshold: 2-4V
Input capacitance: 4.7nF
Output capacitance: 800pF
Reverse transfer capacitance: 455pF
As used in the Deluxe eFuse projecf from July and August 2017.
|Deluxe Touchscreen eFuse PCB |
PCB for the Deluxe Touchscreen eFuse.
Double-sided PCB with plated through holes, solder mask and silkscreen overlay.
132 x 85mm.
|PIC32MX170F256B-50I/SP programmed for the Deluxe Touchscreen eFuse [1810617A.HEX]|
A 32-bit PIC microcontroller in 28-pin DIP programmed for the Deluxe Touchscreen eFuse. This includes the Micromite software v5.03 as well as the TFT LCD configuration, with the eFuse BASIC program pre-loaded.
|Deluxe Touchscreen eFuse PCB pattern (PDF download) |
PDF with the PCB design for the Deluxe Touchscreen eFuse (double-sided).
Both layers are in a single PDF.
Please note that due to the complexity of this board. we don't suggest you try to etch it yourself. The PDF is provided mainly as a reference.
|Matte Black UB1 Lid for the Deluxe Touchscreen eFuse|
A lid laser cut from 3mm black acrylic which replaces the lid supplied with a UB1 "Jiffy" box. Attaches with the supplied screws (longer self-tapping screws may be required, depending on what comes with the box). The external side can be either matte or gloss black.
The Deluxe eFuse PCB is mounted on the rear of the lid using four M3 machine screws, with the touch-screen flush with the top surface. The cut-out is sized to leave minimal clearance around the screen. There are also profiled holes to mount the six binding posts.
158 x 96.5mm.
Note: after removing the protective film, you may need to clean off some glue residue using a damp cloth.