ERRATA
Easy PIC’n
– Versions 3.0 and Version 3.1
Easy Microcontrol’n
– Version 4.0When constructing the circuit, the 8 port B LEDs should be positioned in a row on your circuit board so that they are in numerical order with bit 0 on the right as you view the board when using it (bit 7 on the left).
PIC’n Up The Pace
– Versions 1.0 and 1.1Page 174 – The 2nd, 3rd, and 4th equations counting up from the bottom of the page should end with +5. The last equation at the bottom of the page should not have a minus sign after the = sign. The first equation at the top of the next page should not have a minus sign after the two = signs. The result is +4.
Microcontrol’n Apps –
– Version 2.0
Table of Contents, 5th page — References to pages 353 and 354 PIC12F629/675
Page 374 — Under heading “PORTS – GPIO”
The pins of the F675
In the table: GP3* * Input only
PIC’n Techniques
– Version 1.0Page 37 – Schematic, PIC16C63 – “CCP1” should be over RC2, not RC3.
Page 42–In the block diagram, the prescaler values should be 1, 4, 16.
12th goto sndtst ;bytes equal
movf instr,w ;get copy of instruction
sublw a'a' ;compare with "a"
btfsc status,z ;z flag set if bytes are equal
goto chr_ram ;bytes equal
13th goto enterm ;wait for next transmission
;----------------------------------------------------------
Time'n and Count'n- Version 2.0
Page 26--In the block diagram, the prescaler values should be 1, 4, 16.
Serial PIC’n – Versions 1.0 and 2.0
Page 19–Under Data Terminal Ready – There are two typos in the second sentence. It should read “In the originate mode, the modem cannot dial a phone number until DTR is asserted and in answer mode it cannot answer until DTR is asserted.”
22 lines up from bottom: bsf status,rp0 ;switch to bank 1 20 lines up from bottom: bcf status,rp0 ;switch to bank 0 7 lines up from bottom: bsf status,rp0 ;switch to bank 1 4 lines up from bottom: bcf status,rp0 ;switch to bank 0Page 209– The last two sentences in the paragraph at the top of the page should be deleted.
Page 255– The second full paragraph refers twice to a user register called “systat”. The register should be called “comstat”.
Page 259– In line 8 (beginning at the top of the page), the reference to “IICOMS.TXT” should be changed to “IICOMS.GRP”.
Page 417–After the label “sspad1”, change “portb” to “portc”.
Page 425–Two thirds of the way down the page, change "movlw 034" to "movlw 035" and delete “SPI clock-osc/64” on the second line below that.
Page 491–Change
"dslin3 btfsc" to "dslin3 btfss".
Page 492–Change
"goto dslwr4" to "goto dslwr5" in two places.Easy Debug'n
- Version 1.0Page 3-- Drawing at bottom of page should be RB7 and RB6.
Page 12 - In the table under File Address, "0x0E" should be "0x09".
Page 17-- Remember to pull up RB7 and RB6.
Easy Step’n
– Version 1.0Page 37 – In the pin diagram, Vdd is power, not ground.
Page 48 – In the pin diagram, Vdd is power, not ground.
Page 62 – Schematic – There is no +5V connection to the ULN2803A board. The terminal block at the top of the ULN2803A board should have 2 terminals, not 3.
Page 65 – Schematic – There is no +5V connection to the TIP120 board. The terminal block at the top of the TIP120 board should have 2 terminals, not 3.Page 71 — Last line: input high, output high
Page 121 through 126–Refers to the SLA7024M Unipolar Driver– Through a sharp reader’s experience, our own mistakes, and the effort required to correct them, we have determined that the SLA7024M experiment presented in Easy Step’n is not suitable for experimenters because tweaking of the IC manufacturer’s recommended circuit may be required to obtain proper performance when driving a specific motor.
The SLA7024M and the manufacturer’s tech support are excellent. The hand tailoring required is fine for experienced engineers developing a commercial product, but not for the experimenter just learning about stepper motors.
Please ignore pages 121 through 126. The concept is correct, but making it work for a given motor can be a bit of a trick in my experience.
Page 147 — The Sharp Microelectronics sensor (photointerrupter in Sharp terminology) GPIS55 has been replaced by the GP1S56T which is currently available from Digi-Key. The output of the circuits shown in both schematics on page 147 should be connected to a 270 ohm resistor in series with an LED connected to ground. This LED serves as an indicator. If the sensor slot is blocked, the indicator LED will be off.
The terminolgy used in the description is wrong or inconsistant. Please make the following changes:
Page Text Line As Written Should Be 147 5 infrared diode sensor LED 147 6 infrared radiation light 147 9 infrared light 147 9 the LED the indicator LED 148 13 LED turn off indicator LED turn off 148 13 the LED the sensor LED 149 7 (ie. LED (ie. indicator LED